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Spreading Speed in A Nonmonotone Equation with Dispersal and Delay
Mathematics, 2019 This paper is concerned with the estimation of spreading speed of a nonmonotone equation, which involves time delay and nonlocal dispersal. Due to the time delay, this equation does not generate monotone semiflows when the positive initial value is given.
Xi-Lan Liu, Shuxia Pan
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MetalsThe powder spreading process is a fundamental element within the laser powder bed fusion (PBF-LP) framework given its pivotal role in configuring the powder bed.
Mohamed Awad Salim +2 more
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Spreading speed revisited: Analysis of a free boundary model
Networks and Heterogeneous Media, 2012 We investigate, from a more ecological point of view, a free boundary model considered in [11] and [8] that describes the spreading of a new or invasive species, with the free boundary representing the spreading front. We derive the free boundary condition by considering a "population loss" at the spreading front, and correct some mistakes ...
Yihong Du
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Predicting the Speed of Epidemics Spreading in Networks [PDF]
Physical Review Letters, 2020 Global transport and communication networks enable information, ideas and infectious diseases now to spread at speeds far beyond what has historically been possible. To effectively monitor, design, or intervene in such epidemic-like processes, there is a need to predict the speed of a particular contagion in a particular network, and to distinguish ...
Sam Moore, Tim Rogers
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On an upper bound for the spreading speed
Discrete and Continuous Dynamical Systems - B, 2022 <p style='text-indent:20px;'>In this paper, we use the exponential transform to give a unified formal upper bound for the asymptotic rate of spread of a population propagating in a one dimensional habitat. We show through examples how this upper bound can be obtained directly for discrete and continuous time models. This upper bound has the form &
Mesk, Mohammed, Moussaoui, Ali
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High-Speed Railways and the Spread of Covid-19
SSRN Electronic Journal, 2022 High-speed railways (HSRs) greatly decrease transportation costs and facilitate the movement of goods, services, and passengers across cities. In the context of the Covid-19 pandemic, however, HSRs may contribute to the cross-regional spread of the new coronavirus.
Pang, Jindong, He, Youle, Shen, Shulin
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Experimental study of liquid droplets impact on powder surface: The application of effective dimensionless parameters in analysis [PDF]
E3S Web of Conferences, 2022 Spreading dynamics of liquid droplets impacting onto powder bed are experimentally studied using high-speed photography. Dimensionless numbers—We, Re, the modified We* and Re∗ corrected by substrate deformation—are used to analyze the impact behaviors of
Li Siqi, Yu Hourong, Fang Haisheng
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Approximate solution to the speed of spreading viruses [PDF]
Physical Review E, 2004 Recently, it has been shown that the speed of virus infections can be explained by time-delayed reaction-diffusion [J. Fort and V. Méndez, Phys. Rev. Lett. 89, 178101 (2002)], but no analytical solutions were found. Here we derive formulas for the front speed, valid in appropriate limits.
Ortega-Cejas, Vicente +3 more
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Speed of injection and spread of bupivacaine in the epidural space [PDF]
Anaesthesia, 1987 Summary Speed of injection of bupivacaine was assessed in 73 women who received epidural analgesia in labour. Rapid injection was shown to produce quicker onset of epidural block and more reliable perineal anaesthesia than slow injection, but there was no difference in the final extent of the block.
R B, Griffiths +3 more
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Speed of quantum information spreading in chaotic systems [PDF]
Physical Review B, 2020 Added subsection on spherical subregions, corrected typos, and updated ...
Josiah Couch +4 more
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